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Representative Western blot results, of the expression of cell cycle related proteins PCNA, Cyclin D1 and Cyclin B1 of (a) MDA-MB-468, (b) HCC70 and (c) BT-20 treated with berberine at 0.5 and 1 µM for 120 h and 144 h. Results of three independent experiments ± SD, * p < 0.05, ** p < 0.01 and *** p < 0.001 compared to DMSO, Berb—Berberine.
